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    <script>
        //  3.改变 promise 状态和指定回调函数谁先谁后 (执行)?
        //      resolve         then
        //  都有可能
        //      1. resolve    『执行器函数内部, 同步调用 resolve/reject/throw 』
        //      2. then       『执行器函数内部, 异步调用 resolve/reject』
        
        let p = new Promise((resolve, reject) => {
            setTimeout(() => {
                resolve('Yes');
            }, 1000)
        });

        p.then(v => {
            console.log(v);
        });
        
    </script>
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